Marshal MailMarshal ARJ Extraction Directory Traversal Vulnerability

2006.11.15
Risk: High
Local: Yes
Remote: Yes
CWE: CWE-22


CVSS Base Score: 10/10
Impact Subscore: 10/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

ZDI-06-039: Marshal MailMarshal ARJ Extraction Directory Traversal Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-06-039.html November 10, 2006 -- CVE ID: CVE-2006-5487 -- Affected Vendor: Marshal -- Affected Products: MailMarshal SMTP 5.x MailMarshal SMTP 6.x MailMarshal SMTP 2006 MailMarshal for Exchange 5.x -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since October 24, 2005 by Digital Vaccine protection filter ID 3877, 3878. For further product information on the TippingPoint IPS: http://www.tippingpoint.com -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Marshal MailMarshal (formerly of NetIQ). Authentication is not required to exploit this vulnerability. The specific flaw exists within the extraction and scanning of ARJ compressed attachments. Due to incorrect sandboxing of extracted filenames that contain directory traversal modifiers such as "../", an attacker can cause an executable to be created in an arbitrary location. While currently existing files can not be over written, an attacker may leverage this vulnerability in a number of ways. For example, by placing a malicious binary in the "all users" startup folder. -- Vendor Response: Marshal has issued an update to correct this vulnerability. More details can be found at: http://www.marshal.com/kb/article.aspx?id=11450 -- Disclosure Timeline: 2006.07.17 - Vulnerability reported to vendor 2005.10.24 - Digital Vaccine released to TippingPoint customers 2006.11.10 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by an anonymous researcher. -- About the Zero Day Initiative (ZDI): Established by TippingPoint, a division of 3Com, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. 3Com does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, 3Com provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, 3Com provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product.


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